Page 601
HE
GENERAL
The heating system is separate and connected to the
cooling system. Through the fresh air intake (17) in front
of the windshield, air enters a collector box’’ (16), The
gir goes through a channel via the fan wheel (19) to the
heat exchanger (11) from where it is led into the passen-
get compartment. The fan and heat exchanger has a
common casing. The air is heated when passing the heat
exchanger heated by the cooling liquid, the temperature
of which can be varied by the thermostat valve (22). The
thermostat bulb is located in the current of air injected
into the passenger compartment. The distribution of air
to the passenger compartment is controlled by air distri-
butors (20) via controls. The current of air can either be
HEATING SYSTEM, PRINCIPLE
» Water pump
. Radiator
. Radiator cap
. Expansion tank
. Pressure cap
Fan
. Temperature transmitter
Thermostat
By-pass
. Water jacket, automatic choke
(not models 1976 and 1977)
11, Heat exchanger
SOMWINAHASON =
=
Febr 1977
TING AND VENTILATION SYSTEM
led to the floor j
mere eon the defroster jets, or both
As from model 1971 the cars ar
nels to the floor Space in the re
When the road speed exceeds 3
Speed wind is generally sufficie
oo of the heat exchanger. The best effect of the
a ‘ating system is obtained with closed windows.
: n hot summer days, driving comfort may be improved
Y Using the fan to draw fresh air into the car. Needless
to say, the control lever should then be set at cold.
The heat exchanger is fitted with a bleed nipple (12),
with which the exchanger is to be bled whenever the
cooling system is refilled,
As from model 1974, a new heat exchanger has been
installed which is smaller in size but has a new cellular
package design which makes it even more effective.
€ equipped with air chan-
ar seat.
0 m.p.h. (50 km/h), the
nt to ensure satisfactory
20 4
YZ —_—~ Water
21 i) Hot air
==> Cold air
12. Bleeding nipple
13. Fan motor
14. Side defroster hose
15. Defroster jet
16. Collector box
17. Fresh-air intake
18. Defroster pipe
19. Fan wheel
20. Air distributor
21. Air channel to rear floor
(as from model 1971)
22. Thermostat valve
23. Drain valve
24. Drain plugs (one on each side)
941-1
Page 602
FAN MOTOR
Removal and installation
1. Disconnect the three cables from the fan motor, noting
their respective locations.
2. Back off and remove the six screws retaining the front
cover of the fan housing.
3. Pull out the cover, together with the fan motor.
4. Remove the nuts holding the motor to the front cover.
The fan motor and impeller are balanced together in order
to ensure vibrationfree running. An exchange system is
operative in respect of the complete fan unit.
Reinstall in the reverse order.
HEAT EXCHANGER
Removal and installation
1. Drain off the cooling water and disconnect the two
hoses from the heat exchanger.
2. Disconnect the three cables from the fan motor, noting
their respective locations
Back off and remove the six screws retaining the front
cover of the fan housing. Lift out the fan motor.
REMOVAL OF FAN MOTOR
HEATER
Fan and motor
Casings
Heat exchanger
Bleeder screw
Fresh-air duct
Thermostat valve
Damper housing
Defroster jet
CUO BEN
941-2 SADE
Febr 1977
Page 603
off the screws holding together the fan housing
casings. Eight screws are accessible from the engine
compartment and two nuts from inside the car. To
provide access to these two nuts, fold back the rubber
mat, unscrew the freewheel control handle and loosen
the two trim clips, whereupon the insulation can be
turned back from the cowl plate and the nuts removed.
4, Pull the front part of the fan housing casing out so far
as to allow removal of the heat exchanger.
Note: Proceed with care, to avoid damaging the
thermostat bulb.
>
@w
REMOVAL OF HEAT EXCHANGER
Before refitting the heat exchanger, check that the sealing
rings on the water pipe are in place.
Install the heat exchanger in the reverse order.
Then refill the cooling system with water and check the
hose connections for leaks.
THERMOSTAT VaLve
Removal and installation
1. Drain
Off the cooling water and disconnect the hoses
= ae heat exchanger and thermostat vaive.
ide the throttle linkage at the rubber joint and
pull the shaft out of the thermostat valve casing.
. Remove the four screws holding the thermostat valve
Casing to the fan housing casing.
; Remove the three cables from the fan motor, noting
their respective locations.
Back off and remove the six screws retaining the front
cover of the fan housing. Lift out the fan motor.
SEPARATING THE HEATER CASING
5. Back off and remove the screws holding together the
fan housing casings. Eight screws are accessible from
the engine compartment and two nuts from inside
the car. To provide access to these two nuts, turn
back the rubber mat, unscrew the freewheel control
handle and loosen the two trim clips, whereupon the
insulation can be turned back from the cowl plate and
the nuts removed.
6. Pull out the front part of the fan housing casing and
lift out the heat exchanger. Disconnect the thermostat
coil by bending up the sheet metal tabs on the inside
of the heater casing. Loosen the control and the two
screws holding the protective casing to the thermostat
valve. The valve can now be removed.
Reinstall the thermostat valve in the reverse order. Then
refill the cooling system with water and check the hose
connections for leaks.
941-3
Page 604
-
TOWHOOK ASSEMBLY
saab 95
GENERAL
EXISTING SCREW
M8 NYLOC
WEIGHT COMPLETE: 16 kg (35 |b)
S 3601
TOWHOOK ASSEMBLY, SAAB 95
The towhook assembly for the Saab 95 is designed for a
maximum trailer weight of 910 kg (2000 Ib).
To fit the towhook, proceed as follows:
A.
. Cut away the corrugated cardboard as before
Undo the four screws from the rear bumper mounts
in the legroom well of the extra seat. Remove the
rubber matting and mount the strut (2) with the bum-
per attachment screws. Cut away the corrugated card-
board so that the strut makes direct contact with the
deck plating.
. Undo the screws that secure the bumper to the rear
mounts. Lift up the towhook (1) and secure it by the
rear mounting bar with the bumper retaining screws.
. Chip away the underbody coating with a chisel or
similar so that the other attachment points of the
towhook make direct contact with the deck plating.
Drill four 8.5 mm (1/3) holes through the deck plat-
ing and strut (2), using the towhook as a jig. Mount
the four M8 fasteners.
and
mount the angle iron (3) in the same way. Relay the
rubber matting.
5. After the towhook assembly has been approved by
the appropriate inspecting authority, coat any expo-
sed metal surfaces with fresh underbody sealing
compound.
A wiring assembly kit for 7-pole trailer connecting socket
can be bought as an accessory.
Install the wiring according to the wiring diagram and
instructions.
The assembly kit comprises the following components:
7-pole socket connector
Wiring harness
Screw
Nut
Spring washer
Cable shoe
Selft-tapping screw
SARss 952-1
Page 605
WIRING DIAGRAM
x
rc
z § € =&
= ~ a =
| ed
Rear dome light rn a
92 RDO,75 oS o
fs) = Qa
> c
121H_ GR25 & g soni Gass
25b GR 1,0 25bh RD/VT 1,0
]
aD SN S,75 54bh GN 0,75
53a BLO,75
28e RD1,0
97 VT1.0
oN eels 25a ~—s BL/VT 1,0 cis
28h RD10 Be =
Ass |
53ah__BL0,75 sp j3t) §
°
~
3 3th SV25
= |
rae 86 GN 0,75 ' — at
v 86e GNO,75 / | 86f GNO,75 /
License plate lights
=x r xr
rae ee
7 es & ¢£
9 2 =
£ 2 3
8 1?)
= S 3602
WIRING DIAGRAM
NOTE
The cable 121H GR 0.75 is, according to the wiring COLOR CODE
instructions, intended to be connected to 121 GR VT = WHITE
0.75. This method of connection is sufficient to pro- RD = RED
vide normal interior lighting in a house trailer (max. GR = GRAY
output about 50 W). RD/VT = RED/WHITE
If any other items of current-consuming equipment GN = GREEN
in the trailer (e.g. outside lights) have to be supplied BL = BLUE
through cable 121H, a 2.5 mm* cable should be run SV = BLACK
instead from cable 121H GR 2.5 direct to fuse No. BL/VT = BLUE/WHITE
2 in the car.
952-2 SAAB
Febr 1977
Page 606
WIRING INSTRUCTIONS
Remove tape from protective tubes to lamps. Pull wiring
from the towhook assembly through the tube to the Sa es
lamps and then mount five cable shoes 85 03 286 on the
ends. Retape the opening to keep water out. Same proce-
dure for both left and right side.
Permanent wiring
—_—_—_——_ Towhook wiring system
‘"
Tape to permanent wiring
=-_---—-4
then connect to cable No. 92
red at dome light.
"i =
A, ies w
! =
View B—B i til: 4 "
mere il 1 £
poo eee See a
11 zt
my ai =
la }
on cable No. 121H gray and : Towhook
i
L
Ne
Ground connection.
View A-A Scrape surface clean to
obtain good ground
\ contact.
Tighten cable shoe with
self-tapping screw
79 22 800 in inside side
plating. Hole diameter
3.8 mm (0.15”).
7-pole socket connector
secured by fastener sets
bolt 79 34 490
nut 79 10 474
spring washer 79 10 532
S$ 3603
952-3
SAAB
Page 607
i
Saab 96
GENERAL
S 3604
WEIGHT COMPLETE: 12 kg (26 Ib)
TOWHOOK ASSEMBLY, SAAB 96
The towhook assembly for the Saab 96 is designed for a
maximum trailer weight of 910 kg (2000 Ib).
To fit the towhook, proceed as follows:
1. Undo the four retaining screws from the rear bumper
attachments in the spare wheel compartment in the
trunk. Mount the strut (2) with the bumper attach-
ment screws. Cut away the corrugated cardboard so
that strut makes direct contact with the deck plating.
2. Drill six 8.5 mm (1/3) holes through the deck plat-
ing, using the strut (2) as a jig.
3. Mark off the towhook attachment points on the deck
plating and chip away the underbody coating from
these points with a chisel or similar. Bolt the rear
mounting bar of the towhook in position.
4. Drill the other holes through the deck plating from
beneath, using the towhook (1) as a jig.
5. Cut away the corrugated cardboard and mount the
reaining bars (3) and angle iron (5) above the deck
plating. The square washers (4) go beneath the deck
plating.
952—4
6. After the towhook assembly has been approved by
the appropriate inspecting authority, coat any expo-
sed metal surfaces with fresh underbody sealing
compound.
A wiring assembly kit for 7-pole trailer connecting socket
can be bought as an accessory.
Install the wiring according to the wiring diagram and
instruction, and drill two holes 25 mm (1’’) and 3.8 mm
(0.152”) in the body.
The assembly kit comprises the following components:
7-pole socket connector
Wiring harness
Bolt
Nut
Spring washer
Grommet bushing
Clip
Self-tapping screw
Cable shoe
Febr 1977
Page 608
WIRING DIAGRAM
Indicator RH
Stop ligh RH
Tail light RH
®
| &)
Trunk light
121 GRO,75
121H_ =GR25
28e RD 1,0
S4bh__ONO,75~
25bh_ RO/VT10 +i
25b GR 1,0
53a BLO,75
54b GNO,75
25a BL 1,0
25ah =: BL/VT 1,0
28h RD 1,0 fi 2)
ae 3 7-pole socket
R
3 3th SV25
\
7
55 GNO,75
ake x= x
at a! “2
4 ~
¢ 8 &
Bea ay i
4 a =
2 8 &
WIRING DIAGRAM
Ss 56 SV 0,75 o>
|
. = NOTE
The cable 121H GR 25 is, according to the wiring
'nstructions, intended to be connected to 92 RD
0.75. This method of connection is sufficient to
Provide normal interior lighting in a house trailer
(max. output about 50 W).
If any other items of current-consuming equip-
ment in the trailer (e.g. outside lights) have to be
supplied through cable 121H, a 2.5 mm? cable
should be run instead from cable 121H GR 2.5
direct to fuse No. 2 in the car.
ee
Febr 1977
License plate lights
nm
S 3605
COLOR CODE
VT = WHITE
RD = RED
GR = GRAY
RD/VT = RED/WHITE
GN = GREEN
BL = BLUE
SV = BLACK
BL/VT = BLUE/WHITE
952—5
Page 609
WIRING INSTRUCTIONS
Permanent wiring
9 Towhook wiring system
=
~ eee
Ground connection.
Scrape surface clean
to obtain good ground
contact.
Secure cable shoe with
self-tapping screw
79 22 800, hole dia-
meter 3.8 mm (0.15).
Opening for grommet
bushing 73 26 093,
hole diameter 25 mm
(1°).
952-6
ss
|
| =
|
|
a
ae
Clips 71 75 706
140 mm (5 1/2")
Mount cable shoes
85 03 286 after pulling
the wiring through the
tubes to the lamps and
after running the wire
to the trunk light.
Tape to permanent
wiring
7-pole socket connector
secured by fastener sets,
bolt 79 34 490
nut 79 10 474
spring washer 79 10 532.
S 3606
Febr 1977
Page 610
Ordering Number 305631